Title :
2-D DOA Estimation of Wideband LFM Signal in Fractional Fourier Domain
Author :
Zhang, Yanhong ; Qi, Lin ; Mu, Xiaomin ; Yang, Shouyi
Author_Institution :
Coll. of Inf. Eng., Zhengzhou Univ., Henan
fDate :
Aug. 30 2006-Sept. 1 2006
Abstract :
In allusion to non-stationary wideband LFM signals, an algorithm of direction-of-arrival (DOA) estimation based on fractional Fourier transform (FRFT) is proposed. In this method, the observed signals are first transformed to fractional Fourier (FRF) domain, and by the unique concentration signature of signal, the FRF domain steering vector is defined, then, in the corresponding FRF domain, the two-dimension (2-D) angles estimating of the LFM signal is implemented by using DOA matrix algorithm. Theoretical analyses and simulation results show that, this algorithm can obtain good angle estimation performance with a low computation complexity
Keywords :
Fourier transforms; computational complexity; direction-of-arrival estimation; frequency modulation; matrix algebra; 2D direction-of-arrival estimation; computation complexity; domain steering vector; fractional Fourier domain; fractional Fourier transform; matrix algorithm; nonstationary wideband LFM signal; Computational modeling; Direction of arrival estimation; Educational institutions; Fourier transforms; Interpolation; Propagation delay; Sensor arrays; Time frequency analysis; Two dimensional displays; Wideband;
Conference_Titel :
Innovative Computing, Information and Control, 2006. ICICIC '06. First International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7695-2616-0
DOI :
10.1109/ICICIC.2006.376
